You Are Suggested to Guard Against Eye Diseases If You Cry Too Often
Posted in Eye Exam, Eye Health Care, Eyeglasses Guide on March 4th, 2010 by admin – Be the first to commentWhy do we often cry: under normal circumstances, our tears secreted by lacrimal glands and accessory lacrimal glands after every blink can be brought into equilibrium through the lacrimal drainage system or evaporation. The surface of the eye is filled with tears to keep the eyes moist and comfortable, and we do not feel flowing tears. When the amount of tear secreted is too much or problems appear in the tear excretory system, we will feel tears. A variety of factors will lead to too much amount of tear secretion, including being mentally stimulatedThe Ultimate Ways to prescription sunglasses Sales
The reflex stimulation of foreign body: the effects of cholinergic drugs and anti-cholinesterase agents, and other drugs; some eye diseases such as glaucoma, eyelids, conjunctiva, iritis and others. Or trigeminal and facial nerve being stimulated. The over-dose tears secreted almost to evaporate or egest and then it wil result too much tears.To Enjoy the Brand Which are the First : women eyeglasses
What’s more, there will be something wrong with the excretory system of tears, often including the unnormal, narrow or atresia place of Lacrimal point, the narrow and crowded way from lacrimal duct to nasolacrimal canal or the uncompleted function of lacrimal passage and so. Those can cause that the tears can’t be egested and flow frequently. This situation is particularly prevalent in the elderly. Usually show lacrimation induced by irritation of the wind. In a cold climate, the symptoms are increased. Even regardless of seasons, frequently flowing tears indoor and outdoor.Really?! Ellen DeGeneres Wear retro glasses in Ball!
Snow blindness: Also called the snow optical ophthalmia, mainly is because in the sunlight strong ultraviolet ray after the big piece snowy area reflection to human’s eye cornea, causes the cornea damage result. The investigation shows that 300 micron medium-wave ultraviolet radiation which contians in the sunshine, when they irradiated on the snow field, we may cause snow blindness by reflected sunlight to our eyes. Appears the fear light, bursts into tears, the inflamed ache, itches wonderfully and symptoms and so on intraocular sense of a foreign body.Therefore, the heavy snow day egresses time, best wears the sunglasses, prevents the snowy area reflection the glare stimulation eye.
Chronic conjunctivitis: in the fall and winter, chronic conjunctivitis is one of the factors leading to often flowing tears. Chronic conjunctivitis is divided into infectious and non-infectious natures. The former is caused by inflammation of pathogenic microorganisms. Bacteria, viruses, chlamydia, fungi, etc. are likely to be pathogenic. The negative one usually is connected with environment and the way or habit you use eyes. Nowadays, the ratio of such disease is increasing. Stimulation such as sand wind, dust, smog, harmful gas and often stay up late, sleep insufficiency, excessive smoking, eyestrain, etc all may cause chronic conjunctivitis.
Xerophthalmia: the dry eyes will make the old easy to shed a tear. The cold and try winter is the time when xerophthalmia occurrs frequently Xerophthalmia will make the secretion of fundamental tears less and eyes dry and uncomfortable. If the surface of the eyeball is hurt, tears will flow in large number reflexively. Menopausal women, allergic conjunctivitis patients, people who had contracted trachoma when they are young, people who have scarring tissue on cornea are liable to weep because of lipid tear deficiency. Nasolacrimal duct blockage: not a few old people often weep because of nasolacrimal duct blockage. The opening of nasolacrimal duct is in the lower lid near the alar, the exit is in the nasal cavity.